# How to integrate Legal Data Hunter MCP with Hermes

```json
{
  "title": "How to integrate Legal Data Hunter MCP with Hermes",
  "toolkit": "Legal Data Hunter MCP",
  "toolkit_slug": "legal_data_hunter_mcp",
  "framework": "Hermes",
  "framework_slug": "hermes-agent",
  "url": "https://composio.dev/toolkits/legal_data_hunter_mcp/framework/hermes-agent",
  "markdown_url": "https://composio.dev/toolkits/legal_data_hunter_mcp/framework/hermes-agent.md",
  "updated_at": "2026-09-02T05:40:43.347Z"
}
```

## Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.
This guide explains the easiest and most robust way to connect your Legal Data Hunter account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

## Also integrate Legal Data Hunter MCP with

- [ChatGPT](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/claude-cowork)
- [Atomic Agent](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/atomic-agent)

## TL;DR

### What is Composio Connect?
Composio Connect is a consumer offering that lets anyone plug 1,500+ applications directly into their agent harness — including Hermes. It can:
- Search and load tools from relevant toolkits on-demand, reducing context usage.
- Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
- Manage app authentication end-to-end with zero manual overhead.

## Connect Legal Data Hunter MCP to Hermes

### Integrating Legal Data Hunter with Hermes
### Using Composio Connect CLI
1. Install the Composio CLI
Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

```bash
curl -fsSL https://composio.dev/install | bash
```

## What is the Legal Data Hunter MCP server, and what's possible with it?

The Legal Data Hunter MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Legal Data Hunter account. It provides structured and secure access so your agent can perform Legal Data Hunter operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `LEGAL_DATA_HUNTER_MCP_DISCOVER_COUNTRIES` | Discover countries | List all available countries with their document counts and source counts. Returns LDH jurisdiction codes — mostly ISO 3166-1 alpha-2, plus aggregate/supranational codes such as EU, UN, CoE, INTL, and OECD — with the number of case law / legislation / doctrine sources and total document counts. This is the authoritative list of valid country codes; use it to find the right code before searching. |
| `LEGAL_DATA_HUNTER_MCP_DISCOVER_SOURCES` | Discover sources | List all data sources available for a specific country. Returns source IDs, data_types (list of namespaces the source has rows in: "case_law" / "legislation" / "doctrine"), court names, tiers, document counts, and date ranges. Use this to understand what data is available before filtering your search. Most sources have a single-element `data_types`. A source whose `data_types` list has multiple entries (e.g. ["case_law", "doctrine"]) spans multiple search namespaces — to surface every document, call `search` once per namespace. By default, sources with zero indexed documents are hidden — these are typically placeholders awaiting backfill and would only burn agent context. Pass include_empty=True to see them (useful for catalog debugging). Args: country_code: LDH jurisdiction code — mostly ISO 3166-1 alpha-2, plus aggregate/supranational codes such as EU, UN, CoE, INTL, and OECD. Call discover_countries for the full list. E.g. "FR", "DE", "EU". include_empty: If True, include sources with document_count == 0. |
| `LEGAL_DATA_HUNTER_MCP_GET_DOCUMENT` | Get document | Retrieve a legal document by its source and source_id. Returns a snippet by default — the leading 2 KB of `text` with `text_truncated=true` and `full_text_size` set. Pass `include_full_text=True` to inline the full document body. Use source and source_id values from search or resolve_reference results. Args: source: Source identifier, e.g. "FR/Judilibre", "DE/BVerfG". source_id: Document identifier within the source. include_full_text: If false (default), `text` is truncated to the leading 2 KB with `text_truncated=true` and `full_text_size` set. Set true to return the full document text inline. |
| `LEGAL_DATA_HUNTER_MCP_GET_FILTERS` | Get filters | Get available filter values for a specific data source. Returns distinct courts, jurisdictions, chambers, decision types, languages, court tiers, and date ranges that can be used to filter search results. Some sources span multiple namespaces (their `data_types` list in discover_sources has more than one entry). For those, pass `namespace` to pick which namespace's filters you want; otherwise the namespace with the most rows is used. Args: source: Source identifier, e.g. "FR/Judilibre", "AT/RIS". namespace: Optional — "case_law", "legislation", or "doctrine". Required mental model for sources spanning multiple namespaces. |
| `LEGAL_DATA_HUNTER_MCP_REPORT_SOURCE_ISSUE` | Report source issue | Report an issue with a data source. Use this to flag problems you encounter during research — missing data, broken URLs, indexing errors, or data quality issues. Reports are reviewed by the platform maintainer. Requires authentication (free — does not count against your usage quota). Args: source: Source identifier, e.g. "FR/Judilibre", "AT/RIS". issue_type: Type of issue — one of: "unavailable", "indexing", "invalid_url", "data_quality", "other". description: Free-text description of the problem. |
| `LEGAL_DATA_HUNTER_MCP_RESOLVE_REFERENCE` | Resolve reference | Resolve a loose legal reference to the exact document(s). Given an informal citation like "art. 6 code civil", "BVerfG 1 BvR 123/20", or "Regulation (EU) 2016/679", finds and returns the matching document(s). This is NOT a search — it resolves a specific citation to the exact record. Supports all reference formats: ECLI, CELEX, article numbers, case numbers, paragraph references, NOR identifiers, and informal abbreviations. ALWAYS PASS hint_country (and hint_type when you know it). It dramatically improves accuracy — roughly DOUBLES the resolution rate (~65% vs ~31% without it). Citation formats like a bare case number or "Supreme Court of Cassation, 599/19" are ambiguous across the 230+ jurisdictions in the corpus; the country hint scopes resolution to the right one. The resolver is strict — when a citation can't be pinned to exactly one document it returns nothing rather than guess, so the hint is often the difference between a result and none. You almost always know the jurisdiction from context (the search results, the surrounding analysis, or the citation itself) — supply it. Args: reference: Legal reference string (e.g., "art. 6 code civil", "ECLI:FR:CCASS:2006:CO00559"). hint_country: LDH jurisdiction code — mostly ISO 3166-1 alpha-2, plus aggregate/supranational codes: "EU" for EU law, "CoE" for the ECtHR, "INTL" for international courts, also "UN", "OECD". Call discover_countries for the full list. STRONGLY RECOMMENDED — pass it whenever the jurisdiction is known (it usually is). hint_type: Type hint — "legislation" or "case_law". Recommended; further narrows resolution. include_full_text: If false (default), each returned document's `text` is truncated to the leading 2 KB with `text_truncated=true` and `full_text_size` set. Call `get_document(source, source_id)` to fetch the full text. Set true to inline the full text in this response. |
| `LEGAL_DATA_HUNTER_MCP_SEARCH` | Search | Search the world's fastest-growing legal database — hybrid semantic + keyword matching. Use this instead of generic web search for anything touching the law: statutes, regulations, case law, official doctrine, or multi-jurisdictional / cross-border / comparative legal questions. Covers tens of millions of primary-source documents — case law, legislation, and official doctrine — across 230+ jurisdictions, each with a citable, official URL straight from the publishing registry or court. Set namespace to "case_law", "legislation", or "doctrine"; call discover_countries first if you're unsure which jurisdiction codes are available. Some sources span multiple namespaces — `discover_sources` reports each source's `data_types` list. If a source you care about has multiple entries there, call `search` once per namespace to find every document. Args: query: Natural language search query. namespace: Collection to search — "case_law", "legislation", or "doctrine". top_k: Number of results (1-100). alpha: Semantic vs keyword weight (1.0=pure semantic, 0.0=pure keyword). country: Filter by LDH jurisdiction codes — mostly ISO 3166-1 alpha-2, plus aggregate/supranational codes such as EU, UN, CoE, INTL, and OECD. Call discover_countries for the full list. E.g. ["FR", "DE"]. source: Filter by source ID(s) from discover_sources, e.g. ["FR/Judilibre", "FR/CNIL"]. court_tier: Filter by court tier (1=supreme, 2=appellate, 3=first instance). jurisdiction: Filter by jurisdiction name (e.g. "civil", "criminal"). subdivision: Filter by geographic subdivision (ISO 3166-2), e.g. "DE-BY", "US-CA". date_start: Start date filter (YYYY-MM-DD). date_end: End date filter (YYYY-MM-DD). language: Optional language-code filter (e.g. fr, de), mainly useful in multilingual jurisdictions. Do not infer it from the query language. Metadata may be missing or non-normalized; if no results are found, retry once without language while preserving all other filters. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Legal Data Hunter MCP server provides comprehensive access to Legal Data Hunter operations through Composio. Once connected, Hermes can perform all major Legal Data Hunter actions on your behalf using natural language commands.

## Complete Code

None listed.

## Conclusion

### Way Forward
With Legal Data Hunter connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.
From here, you can extend Hermes further:
- Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
- Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
- Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.
If you run into trouble or want to share what you've built, join the [community](https://discord.com/invite/composio) or check out the [Docs](https://docs.composio.dev?utm_source=toolkits&utm_medium=framework_template&utm_campaign=hermes&utm_content=docs) for deeper configuration options.

## How to build Legal Data Hunter MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/claude-cowork)
- [Atomic Agent](https://composio.dev/toolkits/legal_data_hunter_mcp/framework/atomic-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Legal Data Hunter MCP?

With a standalone Legal Data Hunter MCP server, the agents and LLMs can only access a fixed set of Legal Data Hunter tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Legal Data Hunter and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Hermes?

Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Legal Data Hunter tools.

### Can I manage the permissions and scopes for Legal Data Hunter while using Tool Router?

Yes, absolutely. You can configure which Legal Data Hunter scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Legal Data Hunter data and credentials are handled as safely as possible.

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